A
PPENDIX
A: S
ERIAL
I
NTERFACE
S
PECIFICATIONS
Electronic Copy of LTI’s UltraLyte User’s Manual – 7
th
Edition June 1998
62
Criterion formats follow the guidelines of the
NMEA 0183 Standard for Interfacing Marine
Electronic Navigational Devices, Revision 2.0.
Format Parameters
The format parameters are set to:
4800 BPS (Criterion format only)
9600 BPS (20/20 and UL format))
1 start bit
8 data bits
1 stop bit
no parity
Regardless of the format, all data values are
automatically available at the serial port after
each measurement. Except for version ID
requests, the UltraLyte accepts no queries.
Note that when the format is set to 20.20.Cr,
the baud rate changes from 4800 BPS in
survey mode to 9600 BPS in speed mode.
UltraLyte Download Format
Version Queries
When the serial format is set to UL100 or
UL200, the instrument accepts UltraLyte-format
requests for the firmware version ID. The
request message must be in the format:
$ID<CR>
where
$ID
is the request identifier and
<CR>
is a
carriage return.
Data is returned in the following format:
$ID,
formatid
,
versionid
*
csum
<CR>
where:
$ID
is the message identifier.
formatid
is the download format type (UL100 or
UL200).
For Internal Use Only. Not for Distribution.
Summary of Contents for UltraLyte
Page 1: ...For Internal Use Only Not for Distribution...
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